39423997953909 has 32 divisors (see below), whose sum is σ = 60008182416000. Its totient is φ = 25570833449472.

The previous prime is 39423997953799. The next prime is 39423997953959. The reversal of 39423997953909 is 90935979932493.

39423997953909 is a `hidden beast` number, since 3 + 9 + 4 + 2 + 3 + 9 + 9 + 79 + 539 + 0 + 9 = 666.

It is not a de Polignac number, because 39423997953909 - 2¹¹ = 39423997951861 is a prime.

It is a super-2 number, since 2×39423997953909² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39423997953959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127413894 + ... + 127722935.

It is an arithmetic number, because the mean of its divisors is an integer number (1875255700500).

Almost surely, 2^{39423997953909} is an apocalyptic number.

It is an amenable number.

39423997953909 is a deficient number, since it is larger than the sum of its proper divisors (20584184462091).

39423997953909 is a wasteful number, since it uses less digits than its factorization.

39423997953909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255136994 (or 255136988 counting only the distinct ones).

The product of its (nonzero) digits is 4017693960, while the sum is 81.

The spelling of 39423997953909 in words is "thirty-nine trillion, four hundred twenty-three billion, nine hundred ninety-seven million, nine hundred fifty-three thousand, nine hundred nine".